# Servetec IoT vs Jangsoo

The clearest difference is update cadence: Jangsoo at every 11 days against Servetec IoT's every 4 months. Servetec IoT's advantage is iOS requirement (14.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Servetec IoT ships an update every 4 months, Jangsoo every 11 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Servetec IoT | Jangsoo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 11 days** |
| Size | 200 MB | 31 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HEAYOUNG JUN](https://appshunter.io/developer/1674391888) | [URIEL ELECTRONICS Inc.](https://appshunter.io/developer/1145162575) |

## What reviewers say

### Servetec IoT

[App page](https://appshunter.io/ios/app/servetec-iot/id6445871128)

**Features:** macOS Compatibility

**In-app purchases:** none


### Jangsoo

[App page](https://appshunter.io/ios/app/jangsoo/id6793023166)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Servetec IoT free?

Servetec IoT is free to download, with no in-app purchases.

### Is Jangsoo free?

Jangsoo is free to download, with no in-app purchases.

### Do Servetec IoT or Jangsoo have ads?

Neither Servetec IoT nor Jangsoo shows ads.

### Which is updated more often, Servetec IoT or Jangsoo?

Servetec IoT ships an update every 4 months, and Jangsoo every 11 days. Most recently, Servetec IoT was updated on November 7, 2026 and Jangsoo on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*